Actually, I would like to see the Kemper II more metal (gain options) friendly just like the new Randall Satan/Thrasher as shown in this video. (Bass / Mid /Treble gain knobs instead of one overall gain, for those not checking out video)
Maybe I am just not good enough with tweaking yet but I get the impression that the higher the gain goes in a profile, the more it looses its unique tone and starts to sound like other high gain profiles (regardless of amp profiled). If anyone has any tips on how to dial in and shape metal tones it would be appreciated. For me, it seems that 7 strings are hardest to dial in as the Kemper really accents on the thick low B string for me.
Edit: I'm not looking for a specific tone, just the tools to help me find some tones. I got a grasp of the whole certain cabs complement certain speakers/spaces logic, I'm just looking at more options that I could have missed out on.
I have absolutely no trouble with a 7 string, the KPA does a beautiful job of it. Probably better than most (non-modern) amps do.
A low B fundamental is around 61Hz IIRC. That means that if you've tried to, say, compensate for smaller speakers by cranking the 80Hz band on an EQ, you'd get a louder sounding low B.
High output pickups are also problematic. They sound good at home and can compliment your playing due to compression, but they sound 'narrow' compared to lower output ones so again, players tend to overcompensate by cranking frequencies they shouldn't.
The KPA actually already has something similar to the Satan's gain control - that's your definition knob. If i'm hearing correctly, it sets the frequency around which the signal starts distorting.
I'm guessing the Satan's circuit is similar - it changes the EQ of your guitar pre-gain and compensates for the increase afterwards. Or perhaps they're onto something more interesting.
You can do something close, or identical, yourself with a metal EQ stomp pre-stack.